diff --git a/libs/ardour/disk_writer.cc b/libs/ardour/disk_writer.cc
index ae29fb2d10..bb19bc3c57 100644
--- a/libs/ardour/disk_writer.cc
+++ b/libs/ardour/disk_writer.cc
@@ -1349,4 +1349,5 @@ DiskWriter::use_playlist (DataType dt, boost::shared_ptr<Playlist> playlist)
 	if (reset_ws) {
 		reset_write_sources (false, true);
 	}
+	return 0;
 }